How can I "thin out" my body?

Hi:) I know what your thinking and I'm not trying to be anorexic I just want a more model or Victorias secret model body. I'm 5'11 and about 150. I play sports and do weight training at school so I have some muscle. I wanna go from this link

To a model bod!:) thx lol I know I may lose the no boobs I have(34b) but it's OK I guess lol
How can I "thin out" my body?
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